Supporting and lifting device for maintenance of mechanical numerical control machine tool

The supporting and lifting device comprises a base, fixing columns are arranged on the two sides of the upper end face of the base, cavities are formed in the two fixing columns, and lead screws connected with the bottoms of the cavities through bearings are arranged in the cavities. The top faces of the lead screws extend out of the top faces of the fixing columns and are connected with driving pieces, sliding grooves communicated with the cavity are formed in the inner sides of the two sets of fixing columns, the two sets of lead screws are sleeved with threaded sleeve blocks, a bottom plate is arranged between the two sets of threaded sleeve blocks, and the bottom plate penetrates through the sliding grooves. And the bottom plate and the numerical control machine tool above the bottom plate can stably ascend and descend, and the stability and safety of the device are improved. 本实用新型公开了一种用于机械数控机床维修的支撑升降装置，包括底座，所述底座上端面两侧均设有固定柱，两组所述固定柱的内部均设有腔体，所述腔体内设有与其底部之间轴承连接的丝杆，所述丝杆的顶面伸出固定柱的顶面并连接驱动件，两组所述固定柱的内侧均设有与腔体连通的滑槽，两